From d87105baade79905929e2b5d06c10d4bf22e5e93 Mon Sep 17 00:00:00 2001
From: "Kacper Kostka (aider)" <kacper.kostka08@gmail.com>
Date: Sat, 5 Apr 2025 15:45:13 +0200
Subject: [PATCH] feat: Ensure stone layer chunks always render and remain
 visible

---
 js/main.js   | 9 +++++++++
 js/render.js | 5 +++--
 js/world.js  | 9 +++++++--
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/js/main.js b/js/main.js
index dad3999..43865b0 100644
--- a/js/main.js
+++ b/js/main.js
@@ -78,6 +78,15 @@ function simulationLoop(timestamp) {
     // Update physics with timestamp for rate limiting
     updatePhysics(timestamp);
     
+    // Force stone layer chunks to be rendered every frame
+    const visibleChunks = getVisibleChunks();
+    for (const { chunkX, chunkY, isVisible } of visibleChunks) {
+        if (isVisible && chunkY === 1) {
+            // Mark stone layer chunks as dirty to ensure they're always rendered
+            dirtyChunks.add(getChunkKey(chunkX, chunkY));
+        }
+    }
+    
     // Render
     render();
     
diff --git a/js/render.js b/js/render.js
index 1b5fcc3..935301b 100644
--- a/js/render.js
+++ b/js/render.js
@@ -13,8 +13,9 @@ function render() {
         
         const key = getChunkKey(chunkX, chunkY);
         
-        // Skip rendering if the chunk hasn't changed and isn't marked as dirty
-        if (!dirtyChunks.has(key) && !worldMoved) {
+        // Always render stone layer (chunkY = 1) chunks, even if they're not dirty
+        // For other chunks, only render if they're dirty or the world moved
+        if (chunkY !== 1 && !dirtyChunks.has(key) && !worldMoved) {
             continue;
         }
         
diff --git a/js/world.js b/js/world.js
index 92a1b76..9a30b8d 100644
--- a/js/world.js
+++ b/js/world.js
@@ -527,9 +527,14 @@ function generateChunksAroundPlayer() {
         const chunkY = 1; // The chunk at y = 1 (moved from y = -1)
         const key = getChunkKey(chunkX, chunkY);
         
-        // Always generate and mark as dirty to ensure rendering
+        // Always generate stone layer chunks
         getOrCreateChunk(chunkX, chunkY);
-        dirtyChunks.add(key);
+        
+        // Mark as dirty only if it's a new chunk or if it's visible
+        if (!chunks.has(key) || visibleChunks.some(chunk => 
+            chunk.chunkX === chunkX && chunk.chunkY === chunkY && chunk.isVisible)) {
+            dirtyChunks.add(key);
+        }
     }
     
     // Generate visible chunks first